Senior Full Stack Software Engineer

We are hiring a Senior Full Stack Software Engineer to build fast, intuitive web interfaces and frontend integration libraries for GenAI and intelligent automation. You will deliver accessible, low-latency UI patterns and reusable components while connecting to LLM APIs and cloud microservices.

Responsibilities

• Design and deliver end-to-end GenAI-powered applications with an emphasis on intuitive web UIs and efficient client-side API integrations

• Build responsive, accessible frontend experiences optimized for streaming responses and low latency

• Develop and maintain reusable frontend component libraries, hooks, and design systems for enterprise GenAI apps

• Implement LLM-driven experiences using frameworks such as LangChain or LlamaIndex together with OpenAI, Claude, or Gemini

• Collaborate with designers and product managers to iterate quickly on AI UX patterns like chat assistants, prompt builders, and feedback loops

• Ensure security, accessibility, observability, and robust test coverage across client-side and full-stack work

• Create high-performance, accessible web UIs for AI interactions including streaming text, prompt inputs, citations, and summaries

• Maintain shared libraries of reusable frontend components and hooks to help internal teams embed GenAI capabilities into their applications

• Build UI components that provide transparency, observability, and trust in AI-generated outputs

Requirements

• 3+ years of experience building production apps with React, TypeScript, or Vue for enterprise use cases

• Solid full-stack software engineering background across frontend UIs, REST APIs, and microservices

• Practical experience integrating GenAI features, LLM APIs, and prompt UI patterns into web-based applications

• Strong Python backend skills, plus experience building and consuming cloud microservices on AWS, Docker, and REST APIs

• Proven track record creating, documenting, and maintaining reusable component libraries, design systems, and custom hooks

• English proficiency at a B2+ level (Upper-Intermediate) or higher

Nice to have

• Familiarity with real-time streaming UX patterns such as SSE/WebSockets, prompt builders, citations, and summary UI components

• Knowledge of WCAG 2.1 AA compliance and approaches for architecting accessible UI components

• Practical experience with client-side or Node.js LangChain, LangGraph, or LlamaIndex orchestration

• Exposure to RAG pipelines, vector search platforms like Pinecone or OpenSearch, and embedding fundamentals

• Experience with AI evaluation tools, feedback loop design, and interface-level guardrails

We offer

• International projects with top brands

• Work with global teams of highly skilled, diverse peers

• Healthcare benefits

• Employee financial programs

• Paid time off and sick leave

• Upskilling, reskilling and certification courses

• Unlimited access to the LinkedIn Learning library and 22,000+ courses

• Global career opportunities

• Volunteer and community involvement opportunities

• EPAM Employee Groups

• Award-winning culture recognized by Glassdoor, Newsweek and LinkedIn